Keep track of your plants with reminders & care tips – all to help you grow successfully
My plants
My calendar
My ideas
My advice
For the latest on RHS Shows in 2021, read more
North Yorkshire
Essex
Devon
Surrey
Greater Manchester
General enquiries 020 3176 5800 Mon – Fri | 9am – 5pm
Help us achieve our goals
Make a donation
We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
When using this search
Search by plant name, key attributes or both to find plant details and a list of suppliers.
AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
Give the gift of RHS membership
Other common names Turk's cap lily great American Turk's cap lily
swamp lily Turk's head lily
Family Liliaceae
Genus Lilium are bulbous perennials with erect stems bearing whorled or spirally arranged leaves and terminal racemes or umbels of bowl-shaped, trumpet-shaped, funnel-shaped or turks cap shaped flowers, often fragrant, and white, yellow, orange or red
Details L. superbum is a vigorous stem-rooting lily with purple-mottled green stems and linear bright green leaves; in late summer and early autumn it produces long racemes of up to 40 pendent turkscap flowers, to 7cm across, with red-flushed orange tepals, green towards the bases and spotted maroon
Plant range E United States
Foliage Deciduous
Habit Columnar/Upright
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H6
Full Sun
Partial Shade
Aspect South-facing or West-facing or East-facing
Exposure Exposed or Sheltered
Loam
Sand
MoistureWell-drained
SoilLoam, Sand
pHAcid, Neutral
Ultimate height 1.5-2.5 metres
Ultimate spread 0.5-1 metres
Time to ultimate height 2-5 years
Cultivation Grow in neutral to acid well-drained soil enriched with leaf mould or well-rotted organic matter
Propagation Propagate by seed, sown, when ripe, in containers in a cold frame or separate offsets after the foliage dies down
Suggested planting locations and garden types Cut Flowers Flower borders and beds Wall-side Borders Patio & Container Plants City & Courtyard Gardens Coastal Wildflower meadow
Pruning No pruning required
Pests May be attacked by lily beetle, aphids and slugs; plants in pots are susceptible to vine weevil
Diseases Grey moulds and a virus may cause problems, see lily diseases
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.